Their algorithm matched some that were not the same because it used rough shape matching, and many images were just of the CD or LP label which matched.

While not at a point of being ready for production use for the Archive, they wrote a nice report on their findings that might be useful to others. The Internet Archive hopes to enable many more studies using the data in the collection.

Thank you to Brandon Arrendondo, James Jenkins, Austin Jones, and Professor Trenary.